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| author | Al Viro <viro@zeniv.linux.org.uk> | 2019-10-17 20:39:22 +0100 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2019-11-06 00:04:03 -0500 |
| commit | d9fc5617bcb6f8278ffedd0f25bfbb697da5ca87 (patch) | |
| tree | 675b821667fa27f235ef8e95cd2487baa0b83b3f /tools/perf/scripts/python/syscall-counts.py | |
| parent | scsi: sg: sg_read(): simplify reading ->pack_id of userland sg_io_hdr_t (diff) | |
| download | linux-d9fc5617bcb6f8278ffedd0f25bfbb697da5ca87.tar.gz linux-d9fc5617bcb6f8278ffedd0f25bfbb697da5ca87.zip | |
scsi: sg: sg_new_write(): don't bother with access_ok
... just use copy_from_user(). We copy only SZ_SG_IO_HDR bytes, so that
would, strictly speaking, loosen the check. However, for call chains via
->write() the caller has actually checked the entire range and SG_IO passes
exactly SZ_SG_IO_HDR for count. So no visible behaviour changes happen if
we check only what we really need for copyin.
Link: https://lore.kernel.org/r/20191017193925.25539-5-viro@ZenIV.linux.org.uk
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'tools/perf/scripts/python/syscall-counts.py')
0 files changed, 0 insertions, 0 deletions